:root{
    --background: #101114;
    --primary-color: #1c1D20;
    --secondary-color: #4a4d57;
    --accent-color: #00ffc4;
    --text-color: #f9f9f9;
}
*{
    margin: 0;
    padding: 0;
    
}
html{
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 16pt;
    color: var(--text-color);
}

body{
    background-color: var(--background);
    display: flex;
    align-items: center;
    height: 100vh;
    padding: 10px;
    flex-direction: column;
}
h1{
    font-size: 3rem;
    margin-bottom: 20px;
    margin-top: 100px;
    color: var(--accent-color);
    text-align: center;
    text-transform: uppercase;
    font-weight: 800;
}
.wrapper{
    display: flex;
    flex-direction: column;
    width: 700px;
    max-width: 100%;
    gap: 10px;
    
}
#input-todo{
    box-sizing: border-box;
    background: none;
    border: 2px solid var(--secondary-color);
    border: none;
    padding: 10px 25px;
    border-radius: 1000px;
    color: var(--text-color);
    caret-color: var(--accent-color);
    width: 100%;
    font-size: 16pt;
}

#input-todo:focus{
    outline: none;
}
form{
    position: relative;
}
#add-button{
    position: absolute;
    right: 0;
    top: 0;

    background: var(--accent-color);
    height: 100%;
    padding: 0 30px;
    border: none;
    border-radius: 1000px;
    font: inherit;
    font-weight: 600;
    color: var(--background);
    cursor: pointer;
}

.todo{
   
    margin-bottom: 10px;
    background: var(--primary-color);
    padding: 0 16px;
    border-radius: 15px;
    display: flex;
    align-items: center;
}
.todo .todo-text{
    padding: 15px ;
    padding-right: 0;
    flex-grow: 1;
    transition: 200ms ease;
}
.delete-button{
    background: none;
    border: none;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    padding: 3px
}
.delete-button svg{
    transition: 200ms ease;
}
.delete-button:hover svg{
    fill: red;
}
.custom-checkbox{
    border: 2px solid var(--accent-color);
     border-radius: 50%;
     min-height: 20px;
     min-width: 20px;
     display: flex;
     justify-content: center;
        align-items: center;
        flex-shrink: 0;
        transition: 200ms ease;
}
input[type="checkbox"]:checked ~ .custom-checkbox{
    background-color: var(--accent-color);
}
input[type="checkbox"]:checked ~ .custom-checkbox svg{
    fill: var(--primary-color);
}
input[type="checkbox"]:checked ~ .todo-text{
    text-decoration: line-through;
    color: var(--secondary-color);
}
input[type="checkbox"]{
    display: none;
}

@media (max-width: 500px){
    html{
        font-size: 14pt;
    }
    #add-button{
        padding: 10px;
        position: unset;
        width: 100%;
        margin-top: 10px;
        height: auto;
    }
    h1{
        margin-top: 50px;
        font-size: 15vw;
    }
    #input-todo{
        padding: 10px 15px;
        width: 100%;
    }
}